/Engine/Source/Runtime/Engine/Classes/GameFramework/Actor.h
Attaches the RootComponent of this Actor to the supplied actor, optionally at a named socket.
Whether the attachment was successful or not
bool K2_AttachToActor ( [AActor](API\Runtime\Engine\GameFramework\AActor) * ParentActor, [FName](API\Runtime\Core\UObject\FName) SocketName, EAttachmentRule LocationRule, EAttachmentRule RotationRule, EAttachmentRule ScaleRule, bool bWeldSimulatedBodies )